Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 140020)
+++ channels/chan_sip.c	(working copy)
@@ -6842,6 +6842,7 @@
 		add_header(&req, "X-asterisk-Info", "SIP re-invite (External RTP bridge)");
 	if (!ast_test_flag(&p->flags[0], SIP_NO_HISTORY))
 		append_history(p, "ReInv", "Re-invite sent");
+	try_suggested_sip_codec(p);
 	add_sdp(&req, p);
 	/* Use this as the basis */
 	initialize_initreq(p, &req);
@@ -7195,8 +7196,10 @@
 			if (option_debug)
 				ast_log(LOG_DEBUG, "T38 is in state %d on channel %s\n", p->t38.state, p->owner ? p->owner->name : "<none>");
 			add_t38_sdp(&req, p);
-		} else if (p->rtp) 
+		} else if (p->rtp) {
+			try_suggested_sip_codec(p);
 			add_sdp(&req, p);
+		}
 	} else {
 		add_header_contentLength(&req, 0);
 	}